SFI offers a complete range of E.H Wachs Split Frames to fit most size pipe, tube or vessels.Split frames are also known as clamshell pipe cutting and bevelling machine. Our split frames are named for their ability to split in half at the frame, or “break open” and bolt back together again. This allows them to open and mount around the O.D. of inline piping, or they can be slipped closed over open-ended pipe.